GB661168A - Improvements in or relating to electric signal transducer units - Google Patents
Improvements in or relating to electric signal transducer unitsInfo
- Publication number
- GB661168A GB661168A GB22874/47A GB2287447A GB661168A GB 661168 A GB661168 A GB 661168A GB 22874/47 A GB22874/47 A GB 22874/47A GB 2287447 A GB2287447 A GB 2287447A GB 661168 A GB661168 A GB 661168A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- polarized
- capacitor
- particles
- piezo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000003990 capacitor Substances 0.000 abstract 3
- 239000002245 particle Substances 0.000 abstract 3
- 206010011878 Deafness Diseases 0.000 abstract 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000002441 reversible effect Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
- H04R17/08—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
661,168. Piezo-electric instruments. SONOTONE CORPORATION. Aug. 18, 1947 [Aug. 31, 1946], No. 22874/47. Class 40 (iv). [Also in Group XL (b)] An electro-mechanical transducer comprises at least one solid dielectric body composed essentially of titanate particles and two electrodes united to spaced electrode surfaces of the body to form a capacitor, the particles being initially random-oriented and subsequently permanently polarized so that in the absence of an external polarizing potential applied to the electrodes the capacitor operates as a piezo-electric body. As shown, flexing of the spring-like member 20 which is secured to one of the electrodes 15 produces tensional or compressional forces in the dielectric 16 of capacitor 12 which is polarized by battery 25. The resulting changes in the potential of electrode 14 are utilized as signal output. The effect is reversible and battery 25 may be disconnected once the particles have been polarized. The transducer may be incorporated in phonograph pick-ups, or light weight microphones for deaf-aids, or may be used as an amplifier.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US661168XA | 1946-08-31 | 1946-08-31 | |
| US286656XA | 1947-09-09 | 1947-09-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB661168A true GB661168A (en) | 1951-11-21 |
Family
ID=26703957
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22874/47A Expired GB661168A (en) | 1946-08-31 | 1947-08-18 | Improvements in or relating to electric signal transducer units |
| GB22282/48A Expired GB672236A (en) | 1946-08-31 | 1948-08-24 | Improvements in or relating to electro-mechanical transducers |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22282/48A Expired GB672236A (en) | 1946-08-31 | 1948-08-24 | Improvements in or relating to electro-mechanical transducers |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE483710A (en) |
| CH (1) | CH286656A (en) |
| FR (1) | FR969232A (en) |
| GB (2) | GB661168A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2752428A (en) * | 1951-05-03 | 1956-06-26 | Shure Bros | Phonograph translating device |
| NL226597A (en) * | 1958-04-03 | |||
| US3233047A (en) * | 1961-10-02 | 1966-02-01 | Teleprompter Corp | Stereo piezoelectric transducer |
-
0
- BE BE483710D patent/BE483710A/xx unknown
-
1947
- 1947-08-18 GB GB22874/47A patent/GB661168A/en not_active Expired
-
1948
- 1948-06-29 CH CH286656D patent/CH286656A/en unknown
- 1948-07-16 FR FR969232D patent/FR969232A/en not_active Expired
- 1948-08-24 GB GB22282/48A patent/GB672236A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR969232A (en) | 1950-12-15 |
| CH286656A (en) | 1952-10-31 |
| BE483710A (en) | |
| GB672236A (en) | 1952-05-21 |
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